Emily Lane
February 18, 2025
By default, Email and Inbox channels that make up the same notification template synced event statuses. This meant that if a notification was sent with an in-app inbox and email channel, opening an email will mark the in-app inbox notification as read. Courier Inbox and email events can now be un-synced when sent simultaneously.
Learn more: Channel Settings · why cross-channel read receipts are hard to get right

Send rate limits for providers
Send to Courier at any rate. Courier sends to each provider at the rate you set.
By Emily Lane
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Preference webhooks and change history API
Get every preference change as a webhook, and read the full history by API.
By Emily Lane
October 14, 2026

Cross-Device Email Preview
Preview email templates on real devices, 96 clients across 21 apps, right from Design Studio.
By Emily Lane
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